Normal Reference Ranges
Adult
Negative Qualitative
Pediatric
Negative Qualitative
Clinical Significance
Used to diagnose small-vessel vasculitides. Must be differentiated into c-ANCA (PR3) and p-ANCA (MPO) for specific diagnosis.
Causes of High
- Granulomatosis with polyangiitis (c-ANCA/PR3)
- Microscopic polyangiitis (p-ANCA/MPO)
- Eosinophilic granulomatosis with polyangiitis (p-ANCA)
- Ulcerative Colitis (p-ANCA)
Causes of Low
- Normal finding